Patents by Inventor Valiallah Zomorrodian

Valiallah Zomorrodian has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pressure compensated capacitive micromachined ultrasound transducer for downhole applications
    Patent number: 9534492
    Abstract: An apparatus for interrogating a subsurface material includes a carrier configured to be conveyed through a borehole penetrating the earth, an array of acoustic transducers disposed on the carrier and configured to be compensated for ambient pressure in the borehole, and electronics coupled to the array and configured to operate the array to interrogate the subsurface material. Each acoustic transducer in the array includes a substrate, a bottom electrode disposed on the substrate, a top electrode disposed above the bottom electrode, an insulation layer disposed between the bottom electrode and the top electrode and defining a cavity into which the top electrode may deflect, and a pressure compensating fluid disposed in the cavity and in pressure communication with ambient pressure of the array.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: January 3, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Ehsan Khajeh, Valiallah Zomorrodian
  • PRESSURE COMPENSATED CAPACITIVE MICROMACHINED ULTRASOUND TRANSDUCER FOR DOWNHOLE APPLICATIONS
    Publication number: 20160130936
    Abstract: An apparatus for interrogating a subsurface material includes a carrier configured to be conveyed through a borehole penetrating the earth, an array of acoustic transducers disposed on the carrier and configured to be compensated for ambient pressure in the borehole, and electronics coupled to the array and configured to operate the array to interrogate the subsurface material. Each acoustic transducer in the array includes a substrate, a bottom electrode disposed on the substrate, a top electrode disposed above the bottom electrode, an insulation layer disposed between the bottom electrode and the top electrode and defining a cavity into which the top electrode may deflect, and a pressure compensating fluid disposed in the cavity and in pressure communication with ambient pressure of the array.
    Type: Application
    Filed: November 11, 2014
    Publication date: May 12, 2016
    Inventors: Ehsan Khajeh, Valiallah Zomorrodian